Date: Mon, 31 Dec 2012 21:19:44 +0000 (UTC) From: Oleksandr Tymoshenko <gonzo@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r244914 - in head/sys/arm: arm include ti/omap4 Message-ID: <201212312119.qBVLJi3V009555@svn.freebsd.org>
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Author: gonzo Date: Mon Dec 31 21:19:44 2012 New Revision: 244914 URL: http://svnweb.freebsd.org/changeset/base/244914 Log: PL310 driver update: - Add pl310.disable tunable to disable L2 cache altogether. In order to make sure that it's 100% disabled we use cache event counters for cache line eviction and read allocate events and panic if any of these counters increased. This is purely for debugging purpose - Direct access DEBUG_CTRL and CTRL might be unavailable in unsecure mode, so use platform-specific functions for these registers - Replace #if 1 with proper erratum numbers - Add erratum 753970 workaround - Remove wait function for atomic operations - Protect cache operations with spin mutex in order to prevent race condition - Disable instruction cache prefetch and make sure data cache prefetch is enabled in OMAP4-specific intialization Modified: head/sys/arm/arm/pl310.c head/sys/arm/include/pl310.h head/sys/arm/ti/omap4/omap4_l2cache.c head/sys/arm/ti/omap4/omap4_smc.h Modified: head/sys/arm/arm/pl310.c ============================================================================== --- head/sys/arm/arm/pl310.c Mon Dec 31 21:09:39 2012 (r244913) +++ head/sys/arm/arm/pl310.c Mon Dec 31 21:19:44 2012 (r244914) @@ -39,62 +39,39 @@ __FBSDID("$FreeBSD$"); #include <sys/lock.h> #include <sys/mutex.h> #include <machine/intr.h> -#include <vm/vm.h> -#include <vm/pmap.h> -#include <machine/pl310.h> + #include <machine/bus.h> +#include <machine/pl310.h> #include <dev/fdt/fdt_common.h> #include <dev/ofw/openfirm.h> #include <dev/ofw/ofw_bus.h> #include <dev/ofw/ofw_bus_subr.h> -/** - * PL310 - L2 Cache Controller register offsets. - * +/* + * Define this if you need to disable PL310 for debugging purpose + * Spec: + * http://infocenter.arm.com/help/topic/com.arm.doc.ddi0246e/DDI0246E_l2c310_r3p1_trm.pdf + */ + +/* + * Hardcode errata for now + * http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0246b/pr01s02s02.html */ -#define PL310_CACHE_ID 0x000 -#define PL310_CACHE_TYPE 0x004 -#define PL310_CTRL 0x100 -#define PL310_AUX_CTRL 0x104 -#define PL310_EVENT_COUNTER_CTRL 0x200 -#define PL310_EVENT_COUNTER1_CONF 0x204 -#define PL310_EVENT_COUNTER0_CONF 0x208 -#define PL310_EVENT_COUNTER1_VAL 0x20C -#define PL310_EVENT_COUNTER0_VAL 0x210 -#define PL310_INTR_MASK 0x214 -#define PL310_MASKED_INTR_STAT 0x218 -#define PL310_RAW_INTR_STAT 0x21C -#define PL310_INTR_CLEAR 0x220 -#define PL310_CACHE_SYNC 0x730 -#define PL310_INV_LINE_PA 0x770 -#define PL310_INV_WAY 0x77C -#define PL310_CLEAN_LINE_PA 0x7B0 -#define PL310_CLEAN_LINE_IDX 0x7B8 -#define PL310_CLEAN_WAY 0x7BC -#define PL310_CLEAN_INV_LINE_PA 0x7F0 -#define PL310_CLEAN_INV_LINE_IDX 0x7F8 -#define PL310_CLEAN_INV_WAY 0x7FC -#define PL310_LOCKDOWN_D_WAY(x) (0x900 + ((x) * 8)) -#define PL310_LOCKDOWN_I_WAY(x) (0x904 + ((x) * 8)) -#define PL310_LOCKDOWN_LINE_ENABLE 0x950 -#define PL310_UNLOCK_ALL_LINES_WAY 0x954 -#define PL310_ADDR_FILTER_START 0xC00 -#define PL310_ADDR_FILTER_END 0xC04 -#define PL310_DEBUG_CTRL 0xF40 - - -#define PL310_AUX_CTRL_MASK 0xc0000fff -#define PL310_AUX_CTRL_ASSOCIATIVITY_SHIFT 16 -#define PL310_AUX_CTRL_WAY_SIZE_SHIFT 17 -#define PL310_AUX_CTRL_WAY_SIZE_MASK (0x7 << 17) -#define PL310_AUX_CTRL_SHARE_OVERRIDE_SHIFT 22 -#define PL310_AUX_CTRL_NS_LOCKDOWN_SHIFT 26 -#define PL310_AUX_CTRL_NS_INT_CTRL_SHIFT 27 -#define PL310_AUX_CTRL_DATA_PREFETCH_SHIFT 28 -#define PL310_AUX_CTRL_INSTR_PREFETCH_SHIFT 29 -#define PL310_AUX_CTRL_EARLY_BRESP_SHIFT 30 +#define PL310_ERRATA_588369 +#define PL310_ERRATA_753970 +#define PL310_ERRATA_727915 + +#define PL310_LOCK(sc) do { \ + mtx_lock_spin(&(sc)->sc_mtx); \ +} while(0); + +#define PL310_UNLOCK(sc) do { \ + mtx_unlock_spin(&(sc)->sc_mtx); \ +} while(0); +static int pl310_enabled = 1; +TUNABLE_INT("pl310.enabled", &pl310_enabled); void omap4_l2cache_wbinv_range(vm_paddr_t physaddr, vm_size_t size); void omap4_l2cache_inv_range(vm_paddr_t physaddr, vm_size_t size); @@ -112,34 +89,31 @@ static uint32_t g_l2cache_size; static struct pl310_softc *pl310_softc; -/** - * pl310_read4 - read a 32-bit value from the PL310 registers - * pl310_write4 - write a 32-bit value from the PL310 registers - * @off: byte offset within the register set to read from - * @val: the value to write into the register - * - * - * LOCKING: - * None - * - * RETURNS: - * nothing in case of write function, if read function returns the value read. - */ -static __inline uint32_t -pl310_read4(bus_size_t off) -{ - return bus_read_4(pl310_softc->sc_mem_res, off); -} -static __inline void -pl310_write4(bus_size_t off, uint32_t val) +static int +pl310_filter(void *arg) { - bus_write_4(pl310_softc->sc_mem_res, off, val); + struct pl310_softc *sc = arg; + uint32_t intr; + + intr = pl310_read4(sc, PL310_INTR_MASK); + + if (!sc->sc_enabled && (intr & INTR_MASK_ECNTR)) { + /* + * This is for debug purpose, so be blunt about it + * We disable PL310 only when something fishy is going + * on and we need to make sure L2 cache is 100% disabled + */ + panic("pl310: caches disabled but cache event detected\n"); + } + + return (FILTER_HANDLED); } static __inline void pl310_wait_background_op(uint32_t off, uint32_t mask) { - while (pl310_read4(off) & mask); + + while (pl310_read4(pl310_softc, off) & mask); } @@ -157,29 +131,46 @@ pl310_wait_background_op(uint32_t off, u static __inline void pl310_cache_sync(void) { - pl310_write4(PL310_CACHE_SYNC, 0); + if ((pl310_softc == NULL) || !pl310_softc->sc_enabled) + return; + +#ifdef PL310_ERRATA_753970 + /* Write uncached PL310 register */ + pl310_write4(pl310_softc, 0x740, 0xffffffff); +#else + pl310_write4(pl310_softc, PL310_CACHE_SYNC, 0xffffffff); +#endif } static void pl310_wbinv_all(void) { -#if 1 - pl310_write4(PL310_DEBUG_CTRL, 3); + + if ((pl310_softc == NULL) || !pl310_softc->sc_enabled) + return; + + PL310_LOCK(pl310_softc); +#ifdef PL310_ERRATA_727915 + platform_pl310_write_debug(pl310_softc, 3); #endif - pl310_write4(PL310_CLEAN_INV_WAY, g_l2cache_way_mask); + pl310_write4(pl310_softc, PL310_CLEAN_INV_WAY, g_l2cache_way_mask); pl310_wait_background_op(PL310_CLEAN_INV_WAY, g_l2cache_way_mask); pl310_cache_sync(); -#if 1 - pl310_write4(PL310_DEBUG_CTRL, 0); +#ifdef PL310_ERRATA_727915 + platform_pl310_write_debug(pl310_softc, 0); #endif - + PL310_UNLOCK(pl310_softc); } static void pl310_wbinv_range(vm_paddr_t start, vm_size_t size) { - + + if ((pl310_softc == NULL) || !pl310_softc->sc_enabled) + return; + + PL310_LOCK(pl310_softc); if (start & g_l2cache_align_mask) { size += start & g_l2cache_align_mask; start &= ~g_l2cache_align_mask; @@ -188,12 +179,13 @@ pl310_wbinv_range(vm_paddr_t start, vm_s size &= ~g_l2cache_align_mask; size += g_l2cache_line_size; } -#if 1 - pl310_write4(PL310_DEBUG_CTRL, 3); + +#ifdef PL310_ERRATA_727915 + platform_pl310_write_debug(pl310_softc, 3); #endif while (size > 0) { -#if 1 +#ifdef PL310_ERRATA_588369 /* * Errata 588369 says that clean + inv may keep the * cache line if it was clean, the recommanded workaround @@ -201,48 +193,58 @@ pl310_wbinv_range(vm_paddr_t start, vm_s * write-back and cache linefill disabled */ - pl310_write4(PL310_CLEAN_LINE_PA, start); - pl310_write4(PL310_INV_LINE_PA, start); + pl310_write4(pl310_softc, PL310_CLEAN_LINE_PA, start); + pl310_write4(pl310_softc, PL310_INV_LINE_PA, start); #else - pl310_write4(PL310_CLEAN_INV_LINE_PA, start); + pl310_write4(pl310_softc, PL310_CLEAN_INV_LINE_PA, start); #endif start += g_l2cache_line_size; size -= g_l2cache_line_size; } -#if 1 - pl310_write4(PL310_DEBUG_CTRL, 0); +#ifdef PL310_ERRATA_727915 + platform_pl310_write_debug(pl310_softc, 0); #endif - pl310_wait_background_op(PL310_CLEAN_INV_LINE_PA, 1); + pl310_cache_sync(); - + PL310_UNLOCK(pl310_softc); } static void pl310_wb_range(vm_paddr_t start, vm_size_t size) { - + + if ((pl310_softc == NULL) || !pl310_softc->sc_enabled) + return; + + PL310_LOCK(pl310_softc); if (start & g_l2cache_align_mask) { size += start & g_l2cache_align_mask; start &= ~g_l2cache_align_mask; } + if (size & g_l2cache_align_mask) { size &= ~g_l2cache_align_mask; size += g_l2cache_line_size; } + while (size > 0) { - pl310_write4(PL310_CLEAN_LINE_PA, start); + pl310_write4(pl310_softc, PL310_CLEAN_LINE_PA, start); start += g_l2cache_line_size; size -= g_l2cache_line_size; } - pl310_cache_sync(); - pl310_wait_background_op(PL310_CLEAN_LINE_PA, 1); + pl310_cache_sync(); + PL310_UNLOCK(pl310_softc); } static void pl310_inv_range(vm_paddr_t start, vm_size_t size) { + if ((pl310_softc == NULL) || !pl310_softc->sc_enabled) + return; + + PL310_LOCK(pl310_softc); if (start & g_l2cache_align_mask) { size += start & g_l2cache_align_mask; start &= ~g_l2cache_align_mask; @@ -252,13 +254,13 @@ pl310_inv_range(vm_paddr_t start, vm_siz size += g_l2cache_line_size; } while (size > 0) { - pl310_write4(PL310_INV_LINE_PA, start); + pl310_write4(pl310_softc, PL310_INV_LINE_PA, start); start += g_l2cache_line_size; size -= g_l2cache_line_size; } - pl310_cache_sync(); - pl310_wait_background_op(PL310_INV_LINE_PA, 1); + pl310_cache_sync(); + PL310_UNLOCK(pl310_softc); } static int @@ -280,39 +282,98 @@ pl310_attach(device_t dev) uint32_t way_size; uint32_t ways_assoc; uint32_t ctrl_value; + uint32_t cache_id; + sc->sc_dev = dev; sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (sc->sc_mem_res == NULL) panic("%s: Cannot map registers", device_get_name(dev)); + + /* Allocate an IRQ resource */ + rid = 0; + sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, + RF_ACTIVE | RF_SHAREABLE); + if (sc->sc_irq_res == NULL) { + panic("Cannot allocate IRQ\n"); + } + pl310_softc = sc; + mtx_init(&sc->sc_mtx, "pl310lock", NULL, MTX_SPIN); + sc->sc_enabled = pl310_enabled; - platform_init_pl310(sc); - aux_value = pl310_read4(PL310_AUX_CTRL); - way_size = (aux_value & PL310_AUX_CTRL_WAY_SIZE_MASK) >> - PL310_AUX_CTRL_WAY_SIZE_SHIFT; + /* activate the interrupt */ + bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_MISC | INTR_MPSAFE, + pl310_filter, NULL, sc, &sc->sc_irq_h); + + cache_id = pl310_read4(sc, PL310_CACHE_ID); + device_printf(dev, "Part number: 0x%x, release: 0x%x\n", + (cache_id >> CACHE_ID_PARTNUM_SHIFT) & CACHE_ID_PARTNUM_MASK, + (cache_id >> CACHE_ID_RELEASE_SHIFT) & CACHE_ID_RELEASE_MASK); + aux_value = pl310_read4(sc, PL310_AUX_CTRL); + way_size = (aux_value & AUX_CTRL_WAY_SIZE_MASK) >> + AUX_CTRL_WAY_SIZE_SHIFT; way_size = 1 << (way_size + 13); - if (aux_value & (1 << PL310_AUX_CTRL_ASSOCIATIVITY_SHIFT)) + if (aux_value & (1 << AUX_CTRL_ASSOCIATIVITY_SHIFT)) ways_assoc = 16; else ways_assoc = 8; g_l2cache_way_mask = (1 << ways_assoc) - 1; g_l2cache_size = way_size * ways_assoc; /* Print the information */ - printf(" L2 Cache: %uKB/%dB %d ways\n", (g_l2cache_size / 1024), + device_printf(dev, "L2 Cache: %uKB/%dB %d ways\n", (g_l2cache_size / 1024), g_l2cache_line_size, ways_assoc); - ctrl_value = pl310_read4(PL310_CTRL); - if (!(ctrl_value & 0x1)) { + + ctrl_value = pl310_read4(sc, PL310_CTRL); + + if (sc->sc_enabled && !(ctrl_value & CTRL_ENABLED)) { /* Enable the L2 cache if disabled */ - pl310_write4(PL310_CTRL, ctrl_value & 0x1); + platform_pl310_write_ctrl(sc, CTRL_ENABLED); + } + + if (!sc->sc_enabled && (ctrl_value & CTRL_ENABLED)) { + /* + * Set counters so when cache event happens + * we'll get interrupt and be warned that something + * is off + */ + + /* Cache Line Eviction for Counter 0 */ + pl310_write4(sc, PL310_EVENT_COUNTER0_CONF, + EVENT_COUNTER_CONF_INCR | EVENT_COUNTER_CONF_CO); + /* Data Read Request for Counter 1 */ + pl310_write4(sc, PL310_EVENT_COUNTER1_CONF, + EVENT_COUNTER_CONF_INCR | EVENT_COUNTER_CONF_DRREQ); + + /* Temporary switch on for final flush*/ + sc->sc_enabled = 1; + pl310_wbinv_all(); + sc->sc_enabled = 0; + platform_pl310_write_ctrl(sc, CTRL_DISABLED); + + /* Enable and clear pending interrupts */ + pl310_write4(sc, PL310_INTR_CLEAR, INTR_MASK_ECNTR); + pl310_write4(sc, PL310_INTR_MASK, INTR_MASK_ALL); + + /* Enable counters and reset C0 and C1 */ + pl310_write4(sc, PL310_EVENT_COUNTER_CTRL, + EVENT_COUNTER_CTRL_ENABLED | + EVENT_COUNTER_CTRL_C0_RESET | + EVENT_COUNTER_CTRL_C1_RESET); + } + + if (sc->sc_enabled) + platform_pl310_init(sc); + pl310_wbinv_all(); - + /* Set the l2 functions in the set of cpufuncs */ cpufuncs.cf_l2cache_wbinv_all = pl310_wbinv_all; cpufuncs.cf_l2cache_wbinv_range = pl310_wbinv_range; cpufuncs.cf_l2cache_inv_range = pl310_inv_range; cpufuncs.cf_l2cache_wb_range = pl310_wb_range; + return (0); } @@ -330,4 +391,3 @@ static driver_t pl310_driver = { static devclass_t pl310_devclass; DRIVER_MODULE(pl310, simplebus, pl310_driver, pl310_devclass, 0, 0); - Modified: head/sys/arm/include/pl310.h ============================================================================== --- head/sys/arm/include/pl310.h Mon Dec 31 21:09:39 2012 (r244913) +++ head/sys/arm/include/pl310.h Mon Dec 31 21:19:44 2012 (r244914) @@ -29,10 +29,131 @@ #ifndef PL310_H_ #define PL310_H_ + +/** + * PL310 - L2 Cache Controller register offsets. + * + */ +#define PL310_CACHE_ID 0x000 +#define CACHE_ID_RELEASE_SHIFT 0 +#define CACHE_ID_RELEASE_MASK 0x3f +#define CACHE_ID_PARTNUM_SHIFT 6 +#define CACHE_ID_PARTNUM_MASK 0xf +#define PL310_CACHE_TYPE 0x004 +#define PL310_CTRL 0x100 +#define CTRL_ENABLED 0x01 +#define CTRL_DISABLED 0x00 +#define PL310_AUX_CTRL 0x104 +#define AUX_CTRL_MASK 0xc0000fff +#define AUX_CTRL_ASSOCIATIVITY_SHIFT 16 +#define AUX_CTRL_WAY_SIZE_SHIFT 17 +#define AUX_CTRL_WAY_SIZE_MASK (0x7 << 17) +#define AUX_CTRL_SHARE_OVERRIDE (1 << 22) +#define AUX_CTRL_NS_LOCKDOWN (1 << 26) +#define AUX_CTRL_NS_INT_CTRL (1 << 27) +#define AUX_CTRL_DATA_PREFETCH (1 << 28) +#define AUX_CTRL_INSTR_PREFETCH (1 << 29) +#define AUX_CTRL_EARLY_BRESP (1 << 30) +#define PL310_EVENT_COUNTER_CTRL 0x200 +#define EVENT_COUNTER_CTRL_ENABLED (1 << 0) +#define EVENT_COUNTER_CTRL_C0_RESET (1 << 1) +#define EVENT_COUNTER_CTRL_C1_RESET (1 << 2) +#define PL310_EVENT_COUNTER1_CONF 0x204 +#define PL310_EVENT_COUNTER0_CONF 0x208 +#define EVENT_COUNTER_CONF_NOINTR 0 +#define EVENT_COUNTER_CONF_INCR 1 +#define EVENT_COUNTER_CONF_OVFW 2 +#define EVENT_COUNTER_CONF_NOEV (0 << 2) +#define EVENT_COUNTER_CONF_CO (1 << 2) +#define EVENT_COUNTER_CONF_DRHIT (2 << 2) +#define EVENT_COUNTER_CONF_DRREQ (3 << 2) +#define EVENT_COUNTER_CONF_DWHIT (4 << 2) +#define EVENT_COUNTER_CONF_DWREQ (5 << 2) +#define EVENT_COUNTER_CONF_DWTREQ (6 << 2) +#define EVENT_COUNTER_CONF_DIRHIT (7 << 2) +#define EVENT_COUNTER_CONF_DIRREQ (8 << 2) +#define EVENT_COUNTER_CONF_WA (9 << 2) +#define PL310_EVENT_COUNTER1_VAL 0x20C +#define PL310_EVENT_COUNTER0_VAL 0x210 +#define PL310_INTR_MASK 0x214 +#define PL310_MASKED_INTR_STAT 0x218 +#define PL310_RAW_INTR_STAT 0x21C +#define PL310_INTR_CLEAR 0x220 +#define INTR_MASK_ALL ((1 << 9) - 1) +#define INTR_MASK_ECNTR (1 << 0) +#define INTR_MASK_PARRT (1 << 1) +#define INTR_MASK_PARRD (1 << 2) +#define INTR_MASK_ERRWT (1 << 3) +#define INTR_MASK_ERRWD (1 << 4) +#define INTR_MASK_ERRRT (1 << 5) +#define INTR_MASK_ERRRD (1 << 6) +#define INTR_MASK_SLVERR (1 << 7) +#define INTR_MASK_DECERR (1 << 8) +#define PL310_CACHE_SYNC 0x730 +#define PL310_INV_LINE_PA 0x770 +#define PL310_INV_WAY 0x77C +#define PL310_CLEAN_LINE_PA 0x7B0 +#define PL310_CLEAN_LINE_IDX 0x7B8 +#define PL310_CLEAN_WAY 0x7BC +#define PL310_CLEAN_INV_LINE_PA 0x7F0 +#define PL310_CLEAN_INV_LINE_IDX 0x7F8 +#define PL310_CLEAN_INV_WAY 0x7FC +#define PL310_LOCKDOWN_D_WAY(x) (0x900 + ((x) * 8)) +#define PL310_LOCKDOWN_I_WAY(x) (0x904 + ((x) * 8)) +#define PL310_LOCKDOWN_LINE_ENABLE 0x950 +#define PL310_UNLOCK_ALL_LINES_WAY 0x954 +#define PL310_ADDR_FILTER_STAR 0xC00 +#define PL310_ADDR_FILTER_END 0xC04 +#define PL310_DEBUG_CTRL 0xF40 +#define PL310_PREFETCH_CTRL 0xF60 +#define PREFETCH_CTRL_OFFSET_MASK (0x1f) +#define PREFETCH_CTRL_NOTSAMEID (1 << 21) +#define PREFETCH_CTRL_INCR_DL (1 << 23) +#define PREFETCH_CTRL_PREFETCH_DROP (1 << 24) +#define PREFETCH_CTRL_DL_ON_WRAP (1 << 27) +#define PREFETCH_CTRL_DATA_PREFETCH (1 << 28) +#define PREFETCH_CTRL_INSTR_PREFETCH (1 << 29) +#define PREFETCH_CTRL_DL (1 << 30) +#define PL310_POWER_CTRL 0xF60 + struct pl310_softc { + device_t sc_dev; struct resource *sc_mem_res; + struct resource *sc_irq_res; + void* sc_irq_h; + int sc_enabled; + struct mtx sc_mtx; }; -void platform_init_pl310(struct pl310_softc *sc); +/** + * pl310_read4 - read a 32-bit value from the PL310 registers + * pl310_write4 - write a 32-bit value from the PL310 registers + * @off: byte offset within the register set to read from + * @val: the value to write into the register + * + * + * LOCKING: + * None + * + * RETURNS: + * nothing in case of write function, if read function returns the value read. + */ +static __inline uint32_t +pl310_read4(struct pl310_softc *sc, bus_size_t off) +{ + + return bus_read_4(sc->sc_mem_res, off); +} + +static __inline void +pl310_write4(struct pl310_softc *sc, bus_size_t off, uint32_t val) +{ + + bus_write_4(sc->sc_mem_res, off, val); +} + +void platform_pl310_init(struct pl310_softc *); +void platform_pl310_write_ctrl(struct pl310_softc *, uint32_t); +void platform_pl310_write_debug(struct pl310_softc *, uint32_t); #endif /* PL310_H_ */ Modified: head/sys/arm/ti/omap4/omap4_l2cache.c ============================================================================== --- head/sys/arm/ti/omap4/omap4_l2cache.c Mon Dec 31 21:09:39 2012 (r244913) +++ head/sys/arm/ti/omap4/omap4_l2cache.c Mon Dec 31 21:19:44 2012 (r244914) @@ -27,13 +27,88 @@ __FBSDID("$FreeBSD$"); #include <sys/types.h> #include <sys/param.h> #include <sys/systm.h> +#include <sys/bus.h> +#include <sys/rman.h> +#include <sys/lock.h> +#include <sys/mutex.h> + #include <arm/ti/ti_smc.h> #include <arm/ti/omap4/omap4_smc.h> +#include <machine/bus.h> #include <machine/pl310.h> void -platform_init_pl310(struct pl310_softc *softc) +platform_pl310_init(struct pl310_softc *sc) +{ + uint32_t aux, prefetch; + + aux = pl310_read4(sc, PL310_AUX_CTRL); + prefetch = pl310_read4(sc, PL310_PREFETCH_CTRL); + + if (bootverbose) { + device_printf(sc->sc_dev, "Early BRESP response: %s\n", + (aux & AUX_CTRL_EARLY_BRESP) ? "enabled" : "disabled"); + device_printf(sc->sc_dev, "Instruction prefetch: %s\n", + (aux & AUX_CTRL_INSTR_PREFETCH) ? "enabled" : "disabled"); + device_printf(sc->sc_dev, "Data prefetch: %s\n", + (aux & AUX_CTRL_DATA_PREFETCH) ? "enabled" : "disabled"); + device_printf(sc->sc_dev, "Non-secure interrupt control: %s\n", + (aux & AUX_CTRL_NS_INT_CTRL) ? "enabled" : "disabled"); + device_printf(sc->sc_dev, "Non-secure lockdown: %s\n", + (aux & AUX_CTRL_NS_LOCKDOWN) ? "enabled" : "disabled"); + device_printf(sc->sc_dev, "Share override: %s\n", + (aux & AUX_CTRL_SHARE_OVERRIDE) ? "enabled" : "disabled"); + + device_printf(sc->sc_dev, "Double linefil: %s\n", + (prefetch & PREFETCH_CTRL_DL) ? "enabled" : "disabled"); + device_printf(sc->sc_dev, "Instruction prefetch: %s\n", + (prefetch & PREFETCH_CTRL_INSTR_PREFETCH) ? "enabled" : "disabled"); + device_printf(sc->sc_dev, "Data prefetch: %s\n", + (prefetch & PREFETCH_CTRL_DATA_PREFETCH) ? "enabled" : "disabled"); + device_printf(sc->sc_dev, "Double linefill on WRAP request: %s\n", + (prefetch & PREFETCH_CTRL_DL_ON_WRAP) ? "enabled" : "disabled"); + device_printf(sc->sc_dev, "Prefetch drop: %s\n", + (prefetch & PREFETCH_CTRL_PREFETCH_DROP) ? "enabled" : "disabled"); + device_printf(sc->sc_dev, "Incr double Linefill: %s\n", + (prefetch & PREFETCH_CTRL_INCR_DL) ? "enabled" : "disabled"); + device_printf(sc->sc_dev, "Not same ID on exclusive sequence: %s\n", + (prefetch & PREFETCH_CTRL_NOTSAMEID) ? "enabled" : "disabled"); + device_printf(sc->sc_dev, "Prefetch offset: %d\n", + (prefetch & PREFETCH_CTRL_OFFSET_MASK)); + } + + /* + * Disable instruction prefetch + */ + prefetch &= ~PREFETCH_CTRL_INSTR_PREFETCH; + aux &= ~AUX_CTRL_INSTR_PREFETCH; + + // prefetch &= ~PREFETCH_CTRL_DATA_PREFETCH; + // aux &= ~AUX_CTRL_DATA_PREFETCH; + + /* + * Make sure data prefetch is on + */ + prefetch |= PREFETCH_CTRL_DATA_PREFETCH; + aux |= AUX_CTRL_DATA_PREFETCH; + + /* + * TODO: add tunable for prefetch offset + * and experiment with performance + */ + + ti_smc0(aux, 0, WRITE_AUXCTRL_REG); + ti_smc0(prefetch, 0, WRITE_PREFETCH_CTRL_REG); +} + +void +platform_pl310_write_ctrl(struct pl310_softc *sc, uint32_t val) { - ti_smc0(1, 0, L2CACHE_ENABLE_L2); + ti_smc0(val, 0, L2CACHE_WRITE_CTRL_REG); } +void +platform_pl310_write_debug(struct pl310_softc *sc, uint32_t val) +{ + ti_smc0(val, 0, L2CACHE_WRITE_DEBUG_REG); +} Modified: head/sys/arm/ti/omap4/omap4_smc.h ============================================================================== --- head/sys/arm/ti/omap4/omap4_smc.h Mon Dec 31 21:09:39 2012 (r244913) +++ head/sys/arm/ti/omap4/omap4_smc.h Mon Dec 31 21:19:44 2012 (r244914) @@ -31,7 +31,7 @@ /* Define the various function IDs used by the OMAP4 */ #define L2CACHE_WRITE_DEBUG_REG 0x100 #define L2CACHE_CLEAN_INV_RANG 0x101 -#define L2CACHE_ENABLE_L2 0x102 +#define L2CACHE_WRITE_CTRL_REG 0x102 #define READ_AUX_CORE_REGS 0x103 #define MODIFY_AUX_CORE_0 0x104 #define WRITE_AUX_CORE_1 0x105
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